QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#547395 | #8340. 3 Sum | light_ink_dots# | AC ✓ | 292ms | 43380kb | C++20 | 1.3kb | 2024-09-04 21:15:13 | 2024-10-13 18:55:00 |
Judging History
answer
//最接近夜的灰褪去的那抹苍蓝
#include<bits/stdc++.h>
using namespace std;
const int maxn=505,maxm=20005;
int n,m,T,ans,flg,cnt,goal[4][4],mod[4]={685800001,656000003,363600007,196600009};
int a[maxn][maxm],mul[4][maxm],hsh[4][maxn];
string s;
int main(){
ios::sync_with_stdio(false);
cin>>n>>m;
for(int c=0;c<4;c++){
mul[c][0]=1;
for(int i=1;i<=m;i++)
mul[c][i]=10ll*mul[c][i-1]%mod[c];
for(int i=0;i<m;i++){
goal[1][c]=(goal[1][c]+9ll*mul[c][i])%mod[c];
goal[2][c]=(goal[2][c]+18ll*mul[c][i])%mod[c];
goal[3][c]=(goal[3][c]+27ll*mul[c][i])%mod[c];
}
}
for(int i=1;i<=n;i++){
cin>>s;
int l=s.size();
for(int j=0;j<l;j++)
a[i][l-j-1]=s[j]-48;
l--;
while(l>=m){
a[i][l%m]+=a[i][l],a[i][l]=0,l--;
int j=l%m;
while(a[i][j]>9)
a[i][j+1]+=a[i][j]/10,a[i][j]%=10,j++;
l=max(l,j);
}
for(int j=m-1;j>=0;j--)
for(int c=0;c<4;c++)
hsh[c][i]=(hsh[c][i]+1ll*mul[c][j]*a[i][j])%mod[c];
}
//sum=0,m,2m
for(int i=1;i<=n;i++)
for(int j=i;j<=n;j++)
for(int k=j;k<=n;k++)
for(int d=0;d<4;d++){
int flg=1;
for(int c=0;c<4&&flg;c++)
flg&=(hsh[c][i]+hsh[c][j]+hsh[c][k])%mod[c]==goal[d][c];
ans+=flg;
}
printf("%d\n",ans);
return 0;
}
这程序好像有点Bug,我给组数据试试?
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3892kb
input:
4 1 0 1 10 17
output:
3
result:
ok 1 number(s): "3"
Test #2:
score: 0
Accepted
time: 165ms
memory: 42840kb
input:
500 859 7118711592236878297922359501613604144948355616986970837340677671376753603836852811886591300370143151943368529129749813118476151865844255212534355441611481420938483178075143062691345257288242460282715389758789648541099090735875617822348551942134616963557723055980260082230902505269975518146286...
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: 0
Accepted
time: 280ms
memory: 43380kb
input:
500 17336 11871159223687829792235950161360414494835561698697083734067767137675360383685281188659130037014315194336852912974981311847615186584425521253435544161148142093848317807514306269134525728824246028271538975878964854109909073587561782234855194213461696355772305598026008223090250526997551814628...
output:
0
result:
ok 1 number(s): "0"
Test #4:
score: 0
Accepted
time: 292ms
memory: 43300kb
input:
500 1 751324443898124078584847834484321089092662321556147445230263526014359393841194947303407593948729802551881289193716611867931891257925091769456350249725997883453296895094445731130479434019358742162771547784250401546380268386074363779242500860317042151185119666027858022664683818314351285215150806...
output:
2327631
result:
ok 1 number(s): "2327631"
Test #5:
score: 0
Accepted
time: 272ms
memory: 43348kb
input:
500 2 408542968136435277974575411503179002415404345446801430469044749372949272333801248935236224652806667129749035002588943020176263162139056819871274824302889304493205266143688886696157147111754418731401856424401766968832165255416237731963027205324149660112574729610391396555581935236134531799950318...
output:
212002
result:
ok 1 number(s): "212002"
Test #6:
score: 0
Accepted
time: 260ms
memory: 43300kb
input:
500 11500 75411775796562109942642493394321873284995260953010112281856775261847503626737348402159485133662757032091519863427156582689971229143089317472838196453888261138079171290535429921921548971897026706656838415620603757605079012541561774699628665865662183868374645956694140356716037674688084770628...
output:
7675
result:
ok 1 number(s): "7675"
Test #7:
score: 0
Accepted
time: 269ms
memory: 43188kb
input:
500 11500 85355036663164764459816544518601485185320972076300982726542821424439713703229669576802138231401047471351087455159512255765325323540671792953715169122669767368905391325060775725733157611188832204902997772518104188947349204726490597030311894441123834099315122116302203972018409854605418988681...
output:
1070
result:
ok 1 number(s): "1070"
Test #8:
score: 0
Accepted
time: 1ms
memory: 4160kb
input:
1 11500 9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999...
output:
1
result:
ok 1 number(s): "1"
Extra Test:
score: 0
Extra Test Passed